Can there please be an option to cap the number of reviews?

There is this third party user script you can install that might help:

Lesson Lock by @Kumirei: Displays 0 lessons when you have too much on your plate already. Completely customisable to lock lessons when you have anything between 1 apprentice1 items or a million enlightened items.

This next link goes to directions on how to install userscripts in general: